The paper dealt with the problem of damage formation during cold forming of steel sheets. Since the deformation rate in these processes can be very high, defects and damage to the products can occur. Six steel sheet strips from different batches were examined and a survey of the range of defects in stainless steel sheet forming was made to determine the causes of the defects occurring in the forming of a particular batch. There are many possible reasons for the occurrence of defects in steel related to the tool, the material or the control of the forming process (e.g. too high strain rate). Since the defects occurred only on specific strips with the same tool and deformation, the focus of the work was on characterising the steels. The analysis was used to characterise in detail all the properties of the steel that have a significant influence on the prediction of the forming process, such as the mechanical properties, the chemical composition and the microstructure.
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